Alert archive / Oklahoma / Red Flag Warnings in 2021
Red Flag Warning 5, NWS Tulsa, OK
NWS Tulsa, OK issued this red flag warning at Apr 2, 2021, 12:36 PM CDT for Creek County, Pawnee County, Washington County, Oklahoma. It took effect at Apr 2, 2021, 1:00 PM CDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 2, 2021, 12:36 PM CDT (17:36 UTC)
- In effect from
- Apr 2, 2021, 1:00 PM CDT
- Expired
- Apr 2, 2021, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Tulsa, OK
Counties Creek County, OK, Pawnee County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 70 km from the middle of the area, began a volume at 17:33 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 5.6 hours before the alert went out and 155 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2361 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 224 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
152 WWUS84 KTSA 021736 RFWTSA URGENT - FIRE WEATHER MESSAGE National Weather Service Tulsa OK 1236 PM CDT Fri Apr 2 2021 OKZ054-055-059-064-030000- /O.NEW.KTSA.FW.W.0005.210402T1800Z-210403T0000Z/ Osage-Washington OK-Pawnee-Creek- 1236 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR VERY DRY AND WINDY CONDITIONS FOR PORTIONS OF NORTHEAST OKLAHOMA ALONG AND WEST OF A BARTLESVILLE TO BRISTOW LINE... The National Weather Service in Tulsa has issued a Red Flag Warning, which is in effect until 7 PM CDT this evening. * AFFECTED AREA...IN Oklahoma, Osage, Washington, Pawnee, and Creek counties. * WIND...South winds 15 to 20 mph with gusts to 25 to 30 mph. * HUMIDITY...Afternoon relative humidity 20 to 25 percent. * TEMPERATURE...Highs in the upper 60s. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that a dangerous combination of weather conditions and dry vegetation is expected within 24 hours, favoring rapid growth and spread of any wildfires. The primary weather factors include stronger winds, lower humidities, and warmer temperatures. && $$
1 follow-up statement
106 WWUS84 KTSA 030003 RFWTSA URGENT - FIRE WEATHER MESSAGE National Weather Service Tulsa OK 703 PM CDT Fri Apr 2 2021 OKZ054-055-059-064-030115- /O.EXP.KTSA.FW.W.0005.000000T0000Z-210403T0000Z/ Osage-Washington OK-Pawnee-Creek- 703 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING HAS EXPIRED FOR PARTS OF NORTHEAST OKLAHOMA... Falling temperatures, increasing humidity values, and slowly diminishing winds will lead to improving fire weather conditions this evening. $$
Nearby
Red Flag Warnings in Oklahoma, 2021Every red flag warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.